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alluvial island
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alluvial island
Encyclopedia
理学
〔海岸地形〕
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alluvial island
冲积岛
河口的拦门沙地带是河流物质主要沉积地段,河流携沙搬运至该地带,由于流速减低、水流扩散和潮流顶托等方面影响,泥沙不断沉积抬高,形成海上陆地。又称堆积岛、沙岛、河口沙坝。
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